Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"behavioural flexibility"”.
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Functional organisation of behavioural inhibitory control mechanisms in cortico-basal ganglia circuitry: implications for stimulant use disorder.
… circuits in rats and humans. These included behavioural flexibility, ‘waiting’ and ‘stopping’ impulsivity and involved serial spatial reversal learning task in rodents, and in humans, premature responses in the Monetary Incentive Delay (MID) task and the stop-signal reaction time task. …
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Alterations in executive functioning induced by repeated amphetamine exposure
… We assessed the effects of AMPH sensitization on behavioural flexibility using a cross-maze set shifting task and a WM task using the delayed spatial win-shift (SWSh) task in Long Evans (LE) and Sprague Dawley (SD) rats. Rats were exposed to an AMPH sensitization regimen (15 AMPH or saline …
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Adaptability and responses to threats in a highly successful rail, the pūkeko, Porphyrio melanotus melanotus
The success of a species is inherently linked to behavioural flexibility. This is especially true for species that colonise new regions as well as long isolated island species which subsequently encounter introduced predators. Aotearoa New Zealand is a classic example of the devastating effects …
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GREAT APE CONSERVATION IN THE MATRIX: INVESTIGATING THE SOCIO-ECOLOGICAL RESPONSES OF CHIMPANZEES LIVING IN A FOREST-FARM MOSAIC, UGANDA
Behavioural flexibility may be crucial for the long-term persistence of animals in human-modified habitats, such as forest-farm mosaic landscapes. Understanding species’ socio-ecological responses to anthropogenic disturbances is essential for developing targeted strategies to ensure their survival …
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Effect of population density on diel activity and growth in stream-dwelling Arctic charr Salvelinus alpinus
… that individuals exhibit a degree of behavioural flexibility in their response to changes in ecological conditions and that intraspecific competition can cause animals to modify temporal aspects of their activity to ensure access to resources and maintain growth.
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Anthropogenic influences on the behavioural ecology of urban vervet monkeys
… counterpart. Our understanding of wildlife’s flexibility to anthropogenic change is developing; however, our knowledge of flexibility to the urban landscape is limited, particularly for primate species. Understanding an animal’s ability to adapt behaviourally to urban challenges is necessary …
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Unraveling the interaction between hormones and incubation temperature on lizard cognition
… - decision-making, detection of visual stimuli, behavioural flexibility, and spatial and associative learning - were resilient to early environmental conditions. However, CORT-treated L. delicata responded faster to prey-related chemical cues. Our results suggest that cognitive traits in L. …
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Unraveling the interaction between hormones and incubation temperature on lizard cognition
… - decision-making, detection of visual stimuli, behavioural flexibility, and spatial and associative learning - were resilient to early environmental conditions. However, CORT-treated L. delicata responded faster to prey-related chemical cues. Our results suggest that cognitive traits in L. …
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Prenatal dexamethasone exposure: glucocrticoid programming of the brain
… offspring by using a number of physiological and behavioural measures. Overall I found no evidence of prenatal dexamethasone treatment effect on the hypothalamic-pituitaryadrenal (HPA) axis activity and behavioural responsivities to an acute stress in adult male offspring; however, prenatal …
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Convergent cognitive evolution: what can be learnt from comparisons with corvids and cephalopods?
… hypothesis for the emergence of large brains and behavioural flexibility in cephalopods and put forward novel paradigms that may allow researchers to explore the cognitive underpinning of octopus’ complex behaviours. I conclude by discussing the implication of my findings and future directions for …
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Cities for birds, birds for cities: The urban ecology of birds across scales from global sampling to individual responses
… drivers of species prevalence and individual behavioural responses to human activity in an urban songbird. In Chapter 2, I describe and validate the Global Urban Bird Survey, a standardized acoustic monitoring protocol applied across multiple cities to generate spatially representative …
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Prenatal PolyI:C induced schizophrenia-like cognitive inflexibilities in the male, but not female, rat adult offspring
… inflammation during gestation in rodents induces behavioural, anatomical and cognitive changes in the adult offspring similar to psychiatric patients. However, no studies have investigated the effects of prenatal infection on set-shifting in the adult offspring. Therefore, the present thesis …
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Spatial distribution and density of the Lar gibbon Hylobates lar and Siamang Symphalangus syndactylus in relation to canopy structure and disturbance in a lowland dipterocarp forest, Sumatra.
… species exhibit a degree of tolerance and behavioural flexibility to habitat disturbance, though the preservation of tall trees and the provision of a significant amount of canopy connectivity is required for their continued presence in lowland forests. It is hoped that the results of this …
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Flexibility in extended phenotype sexual signals in great bowerbirds, Chlamydera nuchalis
… consider this unique relationship when exploring flexibility in male signal adaptation. In this thesis, I explored how males displaying through extended phenotype sexual displays may adjust their display to environmental variability and variable female preferences. I studied populations of male …
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Human behavioural dynamics in island rainforests: evidence from the Raja Ampat Islands, West Papua
… challenging environments. Remarkable adaptive flexibility encouraged humans to improvise social and technical behaviours, while niche constructing tendencies enabled them to reshape their ecologies. However, the rate and scale at which humans could transform their behaviours and environments in …
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Habitat correlates of pulse parameters in the highly specialised acoustic system of Chiroptera
… possible selection (as proposed by the FHH) or behavioural flexibility. A congeneric species, iii R. damarensis, was used as a control and additional test of the FHH because it inhabits the same desert biome as R. capensis but echolocates at a higher frequency (equivalent to the frequency used …
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Ecology of the Verreaux's eagle Aquila verreauxii in natural and agriculturally transformed habitats in South Africa
… prey availability and to look for evidence of behavioural flexibility to different availability of prey resources. The relationship between diet breadth and breeding performance was explored locally and regionally using data from previous studies. Eagles in the Sandveld were found to have a …
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ECOPHYSIOLOGY OF A WILD NOCTURNAL PRIMATE, THE JAVAN SLOW LORIS (NYCTICEBUS JAVANICUS)
… bio-logging equipment, I investigated topics of behavioural flexibility and physiological responses to the environment. In Chapter 3, I used skin temperature (Tsk) loggers for measuring the thermoregulation index of slow lorises. Slow lorises displayed sporadic use of daily torpor, with …
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The role of heterozygous lysosomal storage disorder alleles as risk factors for dementia
… of this PhD study. We therefore performed a behavioural test battery, and examined the lysosomal network, in six-monthold AppNL-G-F/NL-G-F mice. AppNL-G-F/NL-G-F mice did not have memory impairments detectable in a Y-maze, novel object recognition test or Morris water maze at six-months. They …
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Neurochemical modulation of affective and behavioural control: Models and applications for psychiatry
Impairments in emotional reactivity and behavioural flexibility are pervasive across disparate psychiatric conditions as traditionally defined. Here, I provide new evidence on how these processes are altered by neuromodulators in humans, with a primary focus on serotonin (5- HT; …
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